Frame for supporting grinding-stones.



W. A. YARWOOD.

FRAME FOR SUPPORTING GRINDING STONES.

APPLICATION r1150 MAY 25. 1916.

1,215,758. Patented Feb. 13,1917.

V gvmmnloz 7 76000621,

m1- "ohms Psrsns m. PNOTQLITMOH wAsHmcmu. 0 cf WILLIAM A. YARWOOD, OF LASAIILE, NEW YORK.

FRAME FOR SUPPORTING GRINDING-STONES.

Specification of Letters Fatent.

Patented Feb. 13, 1917.

Application filed May 25, 1916. Serial No. 99,885.

To all whom it may concern:

Be it known that I, WI LIAM A. YAR- woon, a citizen of the UnitedStates, residing at La Salle, in the county of Niagara, State of NewYork, have invented certain new and useful Improvements in Frames forSupporting Grinding-Stones; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

The present invention is directed to improvements in frames forsupporting grinding stones, and has for its object to provide a deviceof this character which can be held in engagement with a wall or supportand the grind stone supporting shaft rotated through themedium ofaconventional form of brace.

A further object of the invention is to provide a frame ,of thischaracter which supports the grinding stone operating shaft, said shaftbeing so constructed that the grind stone can be adjusted longitudinallythereof.

WVith these and other objects in view, this invention resides in thenovel features of construction, formation, combination and arrangementof parts to be hereinafter more fully described, claimed and illustratedin the accompanying drawing, in which Figure 1 is a top plan view.

Fig. 2 is a side elevation.

Fig. 3 is a cross sectional view.

Fig. A is a sectional view on line H of Fig. 1.

Referring to the drawing 1 indicates the frame which is preferablyformed from sheet metal and consists of a side bar 2 and end 3.

.The rear end bar 3 is provided with a bearing 4 which is engaged by theshaft 5, said shaft having its rear end provided with a head 6, thepurpose of which will appear later. The shaft 5 is threaded for a majorportion of its length and has its forward end provided with a reducedextension 7 which is adapted to rotatably engage the bearing 8 carriedby the forward bar 3.

Mounted on the threaded part of the shaft is a grind stone 9, which maybe formed from any suitable material, said grind stone being held inadjusted positions on the shaft 5 by jam nuts 10. It is obvious that thec0 31" 01 this patent may be grind stone can be readily removed from theshaft should it be desired to substitute another one.

- A shank 11 is carried by the forward end bar 3 and has its outer endprovided with spurs 12 which are adapted to bite into a suitablesupport, whereby the forward end of the frame will be held properly.When the spurs 12 are engaged with the support the brace chuck 13 isengaged with the head 6. Thus it will be seen that upon rotation of thebrace the shaft 5 can be rotated so as to rotate the grind stone 9.

A spring pressed hook 14 is connected to the bar 3 having the bearing 1,and is adapted to engage the shaft 5 so as to retain the shaft in thebearing, and since the other end of the shaft is removably engaged inthe bearing 8 it is obvious that the shaft can be easily removed.

A bar 15 is provided and has its ends pivotally supported in the ends ofthe bars 3. Engaged in one end of the bar 15 is a clamping nut 16, whichserves to retain the bar 15 in any desired adjusted positions A plate 16is adjustably connected to the bar 15, and serves to hold the tools tobe sharpened in clamped engagement with the bar 15, and in properrelation to the grindstone.

What is claimed is A device of the class described comprising a frame, ashank associated with the forward end of the frame and having spurscarried thereby, bearings carried by the ends of the frame, a shaftrotatably engaged in said bearings, the forward end of said shaft beingdetachably engaged with the bearing carried by the adjacent end of theframe, a grind stone adjustably connected to the shaft, a head carriedby the rear end of the shaft, a bar pivotally and adjustably connectedto the end bars of the frame, a clamping plate adjustably connected tosaid bar, said spurs being adapted to be engaged with a support, andmeans detachably en-' gaged with the head to rotate the shaft and to aidin holding the spurs engaged with the support.

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

WILLIAM A. YARWOOD.

Witnesses:

WM. I-I. MCFARLAND, RAYMOND T. GOODMAN.

obtained for five cents each, by addressing the Commissioner of Patents,

'Waehington, 1). 0.

